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(11) | EP 0 687 810 A3 |
| (12) | EUROPEAN PATENT APPLICATION |
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| (54) | Nozzle for a jet engine with variable geometry and orientation |
| (57) Improvements in orientable axisymmetric nozzles of variable geometry which are intended
for gas turbine engines, which nozzles comprise a convergent zone (2) followed by
a divergent zone (3), both formed by main petals (4-5) and secondary petals (33-34),
and they add to the known functions (simultaneous axisymmetric variation, according
to a preestablished law, of the throat area A8 and of the outlet area A9; variation
of all the geometry of the outlet area A9 independently of the throat area A8; and,
axisymmetric orientation of the flow) a fourth function of varying only a part of
the geometry of the outlet area A9 independently of the throat area A8. |